Question UnityWebRequest - Unable to complete SSL connection

Why do we bypass the built-in certificate check and take over control. This problem still occurs by returning true from the handler.

UnityWebRequest request = UnityWebRequest.Post(url, form);
request.SetRequestHeader("Accept", "application/json");
request.SetRequestHeader("SnMac", LoadManager.deviceUniqueIdentifier);
if (isToken)
request.SetRequestHeader("Authorization", "Bearer " + LoadManager.userData.data.token);
request.certificateHandler = new WebRequestCert();

public class WebRequestCert : UnityEngine.Networking.CertificateHandler
{
protected override bool ValidateCertificate(byte[] certificateData)
{
//return base.ValidateCertificate(certificateData);
return true;
}
}

 

Networking, UnityWebRequest, WWW, Postman, curl, WebAPI, etc:

https://forum.unity.com/threads/using-unity-for-subscription-lists.1070663/#post-6910289

https://forum.unity.com/threads/unity-web-request-acting-stupid.1096396/#post-7060150

And setting up a proxy can be very helpful too, in order to compare traffic:

https://support.unity.com/hc/en-us/articles/115002917683-Using-Charles-Proxy-with-Unity